mirror of
https://github.com/php/doc-zh.git
synced 2026-03-24 15:12:20 +01:00
e11e1789b5
* Update pg-lo-create.xml * Update pg-lo-open.xml * Update pg-field-num.xml * Update pg-field-size.xml * Update pg-field-type.xml * Update pg-free-result.xml * Update pg-last-error.xml * Update pg-last-oid.xml * Update pg-lo-close.xml * Update pg-lo-export.xml * Update pg-lo-unlink.xml * Update pg-lo-read-all.xml * Update pg-lo-read.xml * Update pg-lo-read.xml
139 lines
3.5 KiB
XML
Executable File
139 lines
3.5 KiB
XML
Executable File
<?xml version="1.0" encoding="utf-8"?>
|
||
<!-- $Revision$ -->
|
||
<!-- EN-Revision: c2eca73ef79ebe78cebb34053e41b565af504c4f Maintainer: HonestQiao Status: ready -->
|
||
<!-- CREDITS: mowangjuanzi -->
|
||
<refentry xml:id="function.pg-lo-export" xmlns="http://docbook.org/ns/docbook">
|
||
<refnamediv>
|
||
<refname>pg_lo_export</refname>
|
||
<refpurpose>将大型对象导出到文件</refpurpose>
|
||
</refnamediv>
|
||
|
||
<refsect1 role="description">
|
||
&reftitle.description;
|
||
<methodsynopsis>
|
||
<type>bool</type><methodname>pg_lo_export</methodname>
|
||
<methodparam choice="opt"><type>PgSql\Connection</type><parameter>connection</parameter></methodparam>
|
||
<methodparam><type>int</type><parameter>oid</parameter></methodparam>
|
||
<methodparam><type>string</type><parameter>pathname</parameter></methodparam>
|
||
</methodsynopsis>
|
||
<para>
|
||
<function>pg_lo_export</function> 在 PostgreSQL 数据库中获取一个大对象并将其内容保存到本地文件系统上的文件中。
|
||
</para>
|
||
<para>
|
||
要使用大型对象（lo）接口，需要将其放置在事务块中。
|
||
</para>
|
||
<note>
|
||
<para>
|
||
本函数以前的名字为 <function>pg_loexport</function>。
|
||
</para>
|
||
</note>
|
||
</refsect1>
|
||
|
||
<refsect1 role="parameters">
|
||
&reftitle.parameters;
|
||
<para>
|
||
<variablelist>
|
||
<varlistentry>
|
||
<term><parameter>connection</parameter></term>
|
||
<listitem>
|
||
&pgsql.parameter.connection-with-unspecified-default;
|
||
</listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><parameter>oid</parameter></term>
|
||
<listitem>
|
||
<para>
|
||
要导出的数据库里的大型对象的 <varname>OID</varname>。
|
||
</para>
|
||
</listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><parameter>pathname</parameter></term>
|
||
<listitem>
|
||
<para>
|
||
要导出的数据库里的大型对象的文件在客户端上完整路径和文件名。
|
||
</para>
|
||
</listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
</para>
|
||
</refsect1>
|
||
|
||
<refsect1 role="returnvalues">
|
||
&reftitle.returnvalues;
|
||
<para>
|
||
&return.success;
|
||
</para>
|
||
</refsect1>
|
||
|
||
<refsect1 role="changelog">
|
||
&reftitle.changelog;
|
||
<informaltable>
|
||
<tgroup cols="2">
|
||
<thead>
|
||
<row>
|
||
<entry>&Version;</entry>
|
||
<entry>&Description;</entry>
|
||
</row>
|
||
</thead>
|
||
<tbody>
|
||
&pgsql.changelog.connection-object;
|
||
</tbody>
|
||
</tgroup>
|
||
</informaltable>
|
||
</refsect1>
|
||
|
||
<refsect1 role="examples">
|
||
&reftitle.examples;
|
||
<para>
|
||
<example>
|
||
<title><function>pg_lo_export</function> 示例</title>
|
||
<programlisting role="php">
|
||
<![CDATA[
|
||
<?php
|
||
$database = pg_connect("dbname=jacarta");
|
||
pg_query($database, "begin");
|
||
$oid = pg_lo_create($database);
|
||
$handle = pg_lo_open($database, $oid, "w");
|
||
pg_lo_write($handle, "large object data");
|
||
pg_lo_close($handle);
|
||
pg_lo_export($database, $oid, '/tmp/lob.dat');
|
||
pg_query($database, "commit");
|
||
?>
|
||
]]>
|
||
</programlisting>
|
||
</example>
|
||
</para>
|
||
</refsect1>
|
||
|
||
<refsect1 role="seealso">
|
||
&reftitle.seealso;
|
||
<para>
|
||
<simplelist>
|
||
<member><function>pg_lo_import</function></member>
|
||
</simplelist>
|
||
</para>
|
||
</refsect1>
|
||
</refentry>
|
||
|
||
<!-- Keep this comment at the end of the file
|
||
Local variables:
|
||
mode: sgml
|
||
sgml-omittag:t
|
||
sgml-shorttag:t
|
||
sgml-minimize-attributes:nil
|
||
sgml-always-quote-attributes:t
|
||
sgml-indent-step:1
|
||
sgml-indent-data:t
|
||
indent-tabs-mode:nil
|
||
sgml-parent-document:nil
|
||
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
|
||
sgml-exposed-tags:nil
|
||
sgml-local-catalogs:nil
|
||
sgml-local-ecat-files:nil
|
||
End:
|
||
vim600: syn=xml fen fdm=syntax fdl=2 si
|
||
vim: et tw=78 syn=sgml
|
||
vi: ts=1 sw=1
|
||
-->
|